@ARTICLE{tois09-TKD,
  AUTHOR    = {Christos Tryfonopoulos and Manolis Koubarakis and Yannis Drougas},
  TITLE     = "{Information Filtering and Query Indexing for an Information Retrieval Model}",
  JOURNAL   = "{ACM Transactions on Information Systems (TOIS)}",
  VOLUME    = {27},
  NUMBER    = {2},
  YEAR      = {2009},
  PAGES		= {1--47},
}